Kettnerite as scaley grains replacing native bismuth. From Waterloo Quarry, Dodge County, WI. Field of view is about 0.5 mm. (Dan Behnke specimen and image.)
Kettnerite crystals on waylandite. From Waterloo Quarry, Dodge County, WI. SEM image by Tom Buchholz, using the SEM at the University of New Orleans.
Formula: CaBi(CO3)OF Orthorhombic
Description: Kettnerite is a very rare mineral found as an alteration product of bismuth sulfides, such as bismuthinite.
DODGE COUNTY: Kettnerite occurs as tiny crystals associated with other bismuth-bearing minerals in vugs in pegmatite cutting quartzite in the Michels Materials Waterloo Quarry, NE sec. 33 and NW sec. 34 T.9N. R.13E. (Buchholz et al. , 2005b).
Properties of minerals 